Originally Posted by Grabber Blue5.0
A dyno tune is only as good as the tuner. If they had no experience with the copperhead PCM's then stay clear.
+1... Be absolutely sure that the tuner knows what to do with these ecu's.
2011 Mustang GT Premium 401A Spec- Sterling Gray, aka "Graycie", 6-Speed MT, 3.73, Brembo Brake Package, Current Mods: FRPP-Brakelines/Brake Ducts/Alternator/Radiator/Oil Pan/Oil Cooler/Trans.Scoop/Alum.Axle Cover, Steeda-Sport Springs/3rd Link/Adj.UCA/Alum.LCA/Rel.Brackets/Adj.PHB & Brace/Adj.F&R Swaybars/Adj.Front Endlinks/HD Strut Mounts/X11 Ball Joint/Bumpsteer/CAI, Koni Sport Shocks, ATI Damper, MGW Shifter, Kooks Catback, Wavetrac Diff, Michelin Pilot Super Sport... 93 Octane Performance Tune by VMP